Bacterium is the singular word.
the singular word it is salmon.
singular
The singular word for adenomata is adenoma.
there are two 'knee bones'. One on each leg. They are both called patellas. (singular: patella).
Lance is singular.
singular of the word stitches is stitch.
The word 'Phenomenon' is singular.
The word dog is the singular form.
The word "influx" is singular. It refers to the act of flowing in.
Singular
No, the word "list" is singular. The plural form of "list" is "lists."